Dephasing of ultracold cesium 80D5/2-Rydberg electromagnetically induced transparency

Jiao, Yuechun; Hao, Liping; Bai, Jingxu; Fan, Jiabei; Bai, Zhengyang; Li, Weibin; Zhao, Jianming; Jia, Suotang

Abstract

We study Rydberg electromagnetically induced transparency (EIT) of a cascade three-level atom involving 80D5/2 state in a strong interaction regime employing a cesium ultracold cloud. In our experiment, a strong coupling laser couples 6P3/2 to 80D5/2 transition, while a weak probe, driving 6S1/2 to 6P3/2 transition, probes the coupling induced EIT signal. At the two-photon resonance, we observe that the EIT transmission decreases slowly with time, which is a signature of interaction induced metastability. The dephasing rate γOD is extracted with optical depth OD = γODt. We find that the optical depth linearly increases with time at onset for a fixed probe incident photon number Rin before saturation. The dephasing rate shows a nonlinear dependence on Rin. The dephasing mechanism is mainly attributed to the strong dipole-dipole interactions, which leads to state transfer from nD5/2 to other Rydberg states. We demonstrate that the typical transfer time τ0(80D) obtained by the state selective field ionization technique is comparable with the decay time of EIT transmission τ0(EIT). The presented experiment provides a useful tool for investigating the strong nonlinear optical effects and metastable state in Rydberg many-body systems.

Citation

Jiao, Y., Hao, L., Bai, J., Fan, J., Bai, Z., Li, W., Zhao, J., & Jia, S. (2023). Dephasing of ultracold cesium 80D5/2-Rydberg electromagnetically induced transparency. Optics Express, 31(5), 7545-7553. https://doi.org/10.1364/OE.479448

• Journal Article Type: Article
• Acceptance Date: Feb 2, 2023
• Online Publication Date: Feb 15, 2023
• Publication Date: Feb 27, 2023
• Deposit Date: Feb 17, 2023
• Publicly Available Date: Feb 24, 2023
• Journal: Optics Express
• Electronic ISSN: 1094-4087
• Publisher: Optical Society of America
• Peer Reviewed: Peer Reviewed
• Volume: 31
• Issue: 5
• Pages: 7545-7553
• DOI: https://doi.org/10.1364/OE.479448
• Public URL: https://nottingham-repository.worktribe.com/output/17386514
• Publisher URL: https://opg.optica.org/oe/fulltext.cfm?uri=oe-31-5-7545&id=526240
• Additional Information: Governed by the Optica Publishing Group Open Access Publishing Agreement signed by the author and any applicable copyright laws. Authors and readers may use, reuse, and build upon the article, or use it for text or data mining without asking prior permission from the publisher or the Author(s), as long as the purpose is non-commercial and appropriate attribution is maintained.